I have a creature that can transform itself from matter into energy. Some scientist try to trap it by tricking it into a cage. But what kind of cage will hold an energy being?

This take place in the future, so you can use future tech, but it must be based on scientific principles and at least be theoretically possible for humans to create -- no making up a fancy name like "warp tribe" and have it just work.

I have a creature that can transform itself from matter into energy. Some scientist try to trap it by tricking it into a cage. But what kind of cage will hold an energy being?

This take place in the future, so you can use future tech, but it must be based on scientific principles and at least be theoretically possible for humans to create -- no making up a fancy name like "warp drive" and have it just work.

I have a creature that can transformer it self from mater to energy. Some scientist are try to trap it by tricking it into a cage. But what kind of cage will hold energy being?

This take place in the future so you can use future tec but they must be biased on scientific principles and at least be theoretically possible for humans to create, no making up a fancy name like warp tribe and have it just work.

I have a creature that can transform itself from matter into energy. Some scientist try to trap it by tricking it into a cage. But what kind of cage will hold an energy being?

This take place in the future, so you can use future tech, but it must be based on scientific principles and at least be theoretically possible for humans to create -- no making up a fancy name like "warp tribe" and have it just work.